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新疆的气侯异常干燥,桑叶含水率低,据79年春测定。农村养蚕用的白桑桑叶含水率68％,公桑桑叶含水率69.5％,黑桑桑叶含水率65％,所以桑叶极容易萎凋,据在温度80℃,干湿差4℃的蚕室对一龄蚕用桑及用桑规格的桑叶萎凋率调查,给桑后二小时桑叶萎凋率15％,给桑四小时后桑叶萎凋率25％,当桑叶水分减至20％左右时,蚕就不爱吃,所以要保持桑叶新鲜就要2—3小时给一次桑叶,才能保证蚕儿经常能吃到新鲜桑叶,增加给桑回数,对节约用桑,提高劳
Xinjiang’s climate is abnormally dry, mulberry leaf moisture content is low, according to 79 spring determination. In the rural areas, the water content of white mulberry leaves is 68%, the mulberry mulberry leaf water content is 69.5% and the black mulberry leaf water content is 65%. Therefore, the mulberry leaf can wither easily. Of silkworms on silkworm mulberry and mulberry mulberry specifications wilt rate of investigation, mulberry leaves to mulberry two hours after the withered rate of 15% mulberry mulberry leaves to four hours after the withered rate of 25%, when mulberry moisture reduced to 20 % Or so, silkworms do not like to eat, so you want to keep mulberry leaves fresh 2-3 hours to a mulberry leaf, in order to ensure that the croutons can often eat fresh mulberry leaves, increase the number of mulberry leaves, labor